Aluminum foil is generally made of pure aluminum with at least 99% aluminum material. Aluminum in a series of products of rolling mills, the desired density. A very thin aluminum foil is living together in the last action and continues to be divided into this procedure. Produce two types of natural surfaces on the outside of the foil, touch the rolls of the job, and get "intensive". And the sides come into contact with other aluminum foils, "Matte" is finished. Aluminum is hard and weakened by cold rolling. However, subsequent heat therapy of the annealing heater creates the film back to soft and adaptive. China Aluminum Foil with a density of about 14-20 microns has a barrier structure. This suggests that these aluminum foils are impervious to water and gas. A thinner aluminum foil cannot guarantee 100% building protection. But they also provide a barrier house and make sure the food stays much fresher due to the light protection of the food.
